Home / 78,639.26-117,904.21-40,596.39

Finding the Fourth Proportional to 78,639.26, 117,904.21 and 40,596.39

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Solution

The fourth proportional to 78,639.26, 117,904.21 and 40,596.39 is: 60,866.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,639.26 : 117,904.21 = 40,596.39 : x
  2. Step 2: Convert to fraction form
    78,639.26/117,904.21 = 40,596.39/x
  3. Step 3: Cross multiply
    78,639.26x = 117,904.21 × 40,596.39
  4. Step 4: Simplify right side
    78,639.26x = 4,786,485,190.31
  5. Step 5: Solve for x
    x = 4,786,485,190.31/78,639.26
  6. Step 6: Final answer
    x = 60,866.36

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.